Earlier this year we learned of subaru s face lift to the 2018 wrx and sti models both models received nice changes to styling cues along with a few performance enhancements.
Wrx cold air intake hp gain.
The results were seriously impressive with max gains of 30 hp at the wheels at around 5 800 rpm along with lower intake air temps and less airflow restriction.
That s why a cold air intake is a small investment with a rather big payoff.
With both installed horsepower was up by 11.
While we initially hoped our existing bigsf intake system for the 2015 2017 wrx would remain a bolt on solution for the 2018 wrx changes to the car s headlight and front fascia would not allow it.
It makes such a big difference in fact that the simple process of redirecting the filter to draw cooler air is good for a horsepower gain of about 5 to 20 ponies in most cars.
Conical air filter and straight intake tube of the k n typhoon kit 800 858 3333.
During testing at injen this intake resulted in.
Installed solo on the wrx.
The kit is easy to install and is designed to manage an increase in horsepower and torque.
Injen s evolution air intake system for the 2015 subaru wrx sti features a super nano web dry filter and massive horsepower and torque gains.
So when aem told us they now have a cold air intake available for the 2015 subaru wrx we knew it was time to put travis testing skills to work again.
Do cold air intakes work.
Whatever the engine and intake is you still need x say 39 horsepower to move the car on cruise control at 71mph.
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Grimspeed s stage 3 kit includes an intake and j pipe which alone would either be stage 2 or 2 depending on who you ask as well as an intercooler charge pipe and electronic boost controller ebcs.
That s dictated by aerodynamics mechanical resistance etc etc.
Also as your engine s gearing did not change that 39 hp has to be generated at the same rpm say 3000.
Mike cote december 2 2018.
If you are looking for a cold air intake for a gm truck between manufactured between 1999 and 2007 then the spectre performance cold air intake 9900 kit might be just what you need.